Respuesta :

ariannaclampitt39

Answer:

solve for area1: (a+9)(2a+5)

let A be the area

A1=(a+9)(2a+5)

A1=2a²+23a+45 sq. unit

solve for A2; (a+4)(a+4)

A2=(a+4)²

A2=a²+8a+16 sq. unit

solve for the area of the shaded region:

A=A1-A2

A=(2a²+23a+45)-(a²+8a+16)

A=a²+15a+29

the answer is a²+15a+29sq.units.

Step-by-step explanation: